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Finding the Fourth Proportional to 70,307.92, 105,424.08 and 30,819.16

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Solution

The fourth proportional to 70,307.92, 105,424.08 and 30,819.16 is: 46,212.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,307.92 : 105,424.08 = 30,819.16 : x
  2. Step 2: Convert to fraction form
    70,307.92/105,424.08 = 30,819.16/x
  3. Step 3: Cross multiply
    70,307.92x = 105,424.08 × 30,819.16
  4. Step 4: Simplify right side
    70,307.92x = 3,249,081,589.37
  5. Step 5: Solve for x
    x = 3,249,081,589.37/70,307.92
  6. Step 6: Final answer
    x = 46,212.17

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